From e9ca358eb1f6c15862d61e8be717ee0bdebb1cbc Mon Sep 17 00:00:00 2001
From: CN-JS-HuiBai <huyang@littlediary.cn>
Date: Sat, 4 Apr 2026 23:10:23 +0800
Subject: [PATCH] =?UTF-8?q?=E4=BF=AE=E5=A4=8D=E6=9C=8D=E5=8A=A1=E5=99=A8?=
 =?UTF-8?q?=E8=AF=A6=E6=83=85=E4=B8=8D=E6=98=BE=E7=A4=BA=E7=9A=84=E9=97=AE?=
 =?UTF-8?q?=E9=A2=98?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 server/prometheus-service.js | 1 +
 1 file changed, 1 insertion(+)

diff --git a/server/prometheus-service.js b/server/prometheus-service.js
index efd02bd..8b96ebd 100644
--- a/server/prometheus-service.js
+++ b/server/prometheus-service.js
@@ -220,6 +220,7 @@ async function getOverviewMetrics(url, sourceName) {
   const instances = new Map();
 
   const getOrCreate = (metric) => {
+    const originalInstance = metric.instance || 'Unknown';
     const job = metric.job || 'Unknown';
     const token = getServerToken(originalInstance, job, sourceName);